BULLETINS OF THE BUREAU OF PLANT INDUSTRY. 



The Bureau of Plant Industry, which was organized July 1, 1901, includes 

 Vegetable, Pathological, and Physiological Investigations, Botanical Investigations 

 and Experiments, Grass and Forage Plant Investigations, Ppmologieal Investiga- 

 tions, and Experimental Gardens and Grounds, all of which were formerly separate 

 Divisions, and also Seed and Plant Introduction and Distribution, the Arlington 

 Experimental Farm, Tea Culture Investigations, and Domestic Sugar Investigations. 



Beginning with the date of organization of the Bureau, the several series of 

 bulletins of the various Divisions were discontinued, and all are now published as 

 one series of the Bureau. A list of the bulletins issued in the present series follows. 



Attention is directed to the fact "that the serial, scientific, and technical publica- 

 tions of the United States Department of Agriculture are not for general distribution. 

 All copies not required for official use are by law turned over to the Superintendent 

 of Documents, who is empowered to sell them at cost." All applications for such 

 publications should, therefore, be made to The Superintendent of Documents, Union 

 Building, Washington, D. C. 



No. 1. The Relation of Lime and Magnesia to Plant Growth. 1. — Liming of Soils 

 from a Physiological Standpoint. II. — Experimental Study of the Relation 

 of Lime and Magnesia to Plant .Growth. 1901. Price, 1 (J cents. 



2. Spermatogenesis and Fecundation of Zamia. 1901. Price, 20 cents. 



3. Macaroni Wheats. 1901. Price, 20 cents. 



4. Range Improvement in Arizona. ( ( ^operative Experiments with the Arizona 



Experiment Station.) 1902. Price, 10 cents. 



5. Seeds and Plants Imported Through the Section of Seed and Plant Introduc- 



tion for Distribution in Cooperation with the Agricultural Experiment Sta- 

 tions. Inventory No. 9, Numbers. 4351-5500. 1902. Price, 10 cents. 



6. A List of American Varieties of Peppers. 1902. Price, 10 cents. 



7. The Algerian Durum Wheats: A Classified List, with Descriptions. 1902. 



Price, 15 cents. 



8. A Collection of Economic and < >t her Fungi Prepared for Distribution. 1902; 



Price, 10 cents. 



9. The North American Species of Spartina. 1902. Price, 10 cents. 



10. Records of Seed Distribution and Cooperative Experiments with (trasses and 



Forage Plants. 1902. Price, 10 cents. 



11. Johnson Grass: Report of Investigations Made During the Season of 1901; 



1902. Price, 10 cents. 



12. Stock Ranges of Northwestern California: Notes on the Grasses and Forage 



Plants and Range Conditions. 1902. Price, 15 cents. 



13. Experiments in Range Improvements in Central Texas. 1902. Price, 10 



cents. 



14. The Decay of Timber and Methods of Preventing It. 1902. Price, 55 cents. 



15. Forage Conditions on the Northern Border of the < lieat Basin, Being a Deport 



upon Investigations Made During July and August, 1901, in the Region 

 Between Wmnemucca, Nevada, and Ontario, Oregon. 1902. Price, 15 

 cents. 



16. A Preliminary Study of the < lerminalion of the Spores of Agaricus Campestris 



and Other Basidiomycetous Fungi. 1902. Price, 10 cents. 



[Continued on p. :-; of cover.] 



